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Re: Fillet recipe?

I experimented with the limestone, too. I found that if you mix in some wheat flour it will hold it s shape better, but don t use so much that it get

Message 1 of 29
, May 1, 2002

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I experimented with the limestone, too. I found that if you mix in
some wheat flour it will hold it's shape better, but don't use so
much that it get "doughy". I found it suprisingly easy to sand, too.
One of the fillets without cloth that I made on the seats of my
Gypsy have failed.

Roger S

--- In bolger@y..., "sconradpt" <sconrad@t...> wrote:
> I experimented on scraps with pulverized limestone (as recommended
by
> Carnell)as an epoxy filler tonight for a 90 degree fillet. Got a
good
> peanut butter consistancy and brown color, but it sagged too much.
I
> guess I'll add some cabosil. I'll check the strength in a day or
two.
> It is too cold here (50 - 60) for the epoxy to cure very fast. Do
90
> degree fillets have to be covered with cloth? or is the epoxy
alone
> strong enough?
>
>
> --- In bolger@y..., David Ryan <david@c...> wrote:
> > FBBB --
> >
> > I'm trying to get the LSME off my lawn and back into the lake
where
> > she belongs. The joints between the decks and bulkhead needed
some
> > help so I was trying to fill/fillet, but my goop was not staying
> put.
> >
> > Anyone got a fillet recipe they're happy with? I'm using Raka
epoxy
> > mixed 4 parts resin, 1 part fast hardener, 1 part slow hardener.
> I'm
> > pretty happy with that combo for working time.
> >
> > YIBB,
> >
> > David
> >
> > C.E.P.
> > 415 W.46th Street
> > New York, New York 10036
> > http://www.crumblingempire.com
> > (212) 247-0296

thomas dalzell

I experimented on scraps with pulverized limestone (as recommended by Carnell)as an epoxy filler tonight for a 90 degree fillet. Got a good

Message 2 of 29
, May 2, 2002

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<tt>
I experimented on scraps with pulverized limestone (as
recommended by <BR>
Carnell)as an epoxy filler tonight for a 90 degree
fillet. Got a good <BR>
peanut butter consistancy and brown color, but it
sagged too much. I <BR>
guess I'll add some cabosil. I'll check the strength
in a day or two. <BR>
It is too cold here (50 - 60) for the epoxy to cure
very fast. Do 90 <BR>
degree fillets have to be covered with cloth? or is
the epoxy alone <BR>
strong enough?<BR>
<BR>

Pulverized limestone is undoubtedly strong enough. It
is a very expensive material in the sense that it
yields very little compound for a unit of epoxy, and
the material is also heavy. That is the reason for
microballons, as much as three times the volume of
comp./unit epoxy.

Yes and no is the answer on cloth. One usually does
not require cloth where the loads are light, or where
the compound comes under compression. Where it will
be worked both ways, or the loads are major, then
cloth will significantly (massively) reduce the amount
of material required in the fillet. A listing of the
amounts can be found in Gougeon materials, and the
non-glass supported fillets are hugely larger than
those we typically find in boats. If one wets the
glass into the wet fillet, the time required to add
glass is minimal.

... Pulverized limestone, while heavy, it *NOT* expensive in terms of $$$ s. I used athletic field chalk , which is pulverized limestone. I got 50 lbs for

Message 3 of 29
, May 3, 2002

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On Thu, 2 May 2002, thomas dalzell wrote:

> Pulverized limestone is undoubtedly strong enough. It is a very
> expensive material in the sense that it yields very little compound
> for a unit of epoxy, and the material is also heavy.

Pulverized limestone, while heavy, it *NOT* expensive in terms of $$$'s. I
used "athletic field chalk", which is pulverized limestone. I got 50 lbs
for about $3. I aslo use it on my lawn to sweeten the soil.

thomas dalzell

It isn t the limestone that is expensive it is the use of epoxy, labour, and the weight. Mix two pots of gunk using PL and microballons, with enough Cabosil

Message 4 of 29
, May 3, 2002

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It isn't the limestone that is expensive it is the use
of epoxy, labour, and the weight. Mix two pots of
gunk using PL and microballons, with enough Cabosil in
each to eliminate sag. You will get 2,3,4 times more
gunk out of the same epoxy using MBs as you get using
PL. Everyone's prices will vary, but in my region,
for my boats, it makes no sense to spend the time
mixing 3 times the epoxy to get the same volume. It
makes no sense in terms of the cost of epoxy. It
makes no sense to add that much weight, where
elsewhere I will be spending good bucks on stuff like
balsa core etc... to keep weight down, just to
economize on the filler.

heavy.<BR>
<BR>
Pulverized limestone, while heavy, it *NOT* expensive
in terms of $$$'s. I<BR>
used "athletic field chalk", which is
pulverized limestone. I got 50 lbs<BR>
for about $3. I aslo use it on my lawn to
sweeten the soil.<BR>
<BR>
<BR>
</tt>